Having “NBC” parents is not the issue.
Having mere “C” parents at the moment of one’s birth (in addition to being born in the U.S.) has always been the requirement.
People should stop yammering on about parents being required to be the “NB” variety of “C”. It’s just not necessary.
And for those claiming that Trump was/is ineligible, that is NOT true at all! Mary Trump became a NATURALIZED CITIZEN of this nation in 1942, years prior to Donald's birth. Both of his parents were American citizens and he was born here.